I have a Cisco Catalyst 3750G-TS switch. When powering on, all of the status lights come on, then the syatem light flashes 5 times. That is the only indication I get that the switch is working. Even when using a console cable, there is no activity when it should be booting, all I get is a blank console screen. I have attempted resetting by holding the mode button while powering on, but this does not solve the issue. Does anyone have an idea on how to resolve this issue and get our swithc back up and running?